This is fantastic.
It's basically a whole lotta checklists for designing specific things. There are:
- Pages: typical brochure website type pages that most sites have
- Elements: UI elements like avatars, cards, toggles, navigation, search, etc.
- Flows: the basics of flows, payments, etc.
- Topics: the foundations of responsiveness, type, accessibility, colors, etc.
- Brand: brand-focused rather than web-focused design considerations.
It's all quite basic, and there's more complexity involved than most of what these list out...but very helpful as a spark-point.